[INFO] fetching crate rustile 0.0.8...
[INFO] testing rustile-0.0.8 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate rustile 0.0.8 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate rustile 0.0.8
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate rustile 0.0.8
[INFO] tweaked toml for crates.io crate rustile 0.0.8 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rustile 0.0.8 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rustile 0.0.8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3b9a6b9bda6cda823ab9f0c16796342d4874e7709cf4e3ea6883df5673e1f2f8
[INFO] running `Command { std: "docker" "start" "-a" "3b9a6b9bda6cda823ab9f0c16796342d4874e7709cf4e3ea6883df5673e1f2f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3b9a6b9bda6cda823ab9f0c16796342d4874e7709cf4e3ea6883df5673e1f2f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b9a6b9bda6cda823ab9f0c16796342d4874e7709cf4e3ea6883df5673e1f2f8", kill_on_drop: false }`
[INFO] [stdout] 3b9a6b9bda6cda823ab9f0c16796342d4874e7709cf4e3ea6883df5673e1f2f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0acf4f6aa88b8db9ba0a15c322abe2bdb4e5a0636a2998ac37162bf08e083b76
[INFO] running `Command { std: "docker" "start" "-a" "0acf4f6aa88b8db9ba0a15c322abe2bdb4e5a0636a2998ac37162bf08e083b76", kill_on_drop: false }`
[INFO] [stderr]    Compiling regex-syntax v0.8.10
[INFO] [stderr]    Compiling rustix v1.1.4
[INFO] [stderr]    Compiling linux-raw-sys v0.12.1
[INFO] [stderr]    Compiling bitflags v2.11.0
[INFO] [stderr]    Compiling colorchoice v1.0.4
[INFO] [stderr]    Compiling jiff v0.2.21
[INFO] [stderr]    Compiling anstyle-parse v0.2.7
[INFO] [stderr]    Compiling x11rb-protocol v0.13.2
[INFO] [stderr]    Compiling xcursor v0.3.10
[INFO] [stderr]    Compiling xkeysym v0.2.1
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling anstream v0.6.21
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling gethostname v1.1.0
[INFO] [stderr]    Compiling regex v1.12.3
[INFO] [stderr]    Compiling env_filter v1.0.0
[INFO] [stderr]    Compiling env_logger v0.11.9
[INFO] [stderr]    Compiling x11rb v0.13.2
[INFO] [stderr]    Compiling rustile v0.0.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::any::Any`
[INFO] [stdout]  --> src/core.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::any::Any;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `aogonek` and `x`
[INFO] [stdout]   --> src/rustile.rs:11:20
[INFO] [stdout]    |
[INFO] [stdout] 11 | use xkeysym::key::{aogonek, x};
[INFO] [stdout]    |                    ^^^^^^^  ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `atom_wm_type`, `atom_wm_type_dialog`, `atom_wm_type_utility`, and `atom_wm_type_splash` are never read
[INFO] [stdout]   --> src/rustile.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Rustile<C: Connection> {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 23 |     atom_wm_type: Atom,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 24 |     atom_wm_type_dialog: Atom,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 25 |     atom_wm_type_utility: Atom,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 26 |     _atom_wm_type_toolbar: Atom,
[INFO] [stdout] 27 |     atom_wm_type_splash: Atom,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `should_float` is never used
[INFO] [stdout]    --> src/rustile.rs:535:8
[INFO] [stdout]     |
[INFO] [stdout]  32 | impl<C: Connection> Rustile<C> {
[INFO] [stdout]     | ------------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 535 |     fn should_float(&self, win: WindowId) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/rustile.rs:854:21
[INFO] [stdout]     |
[INFO] [stdout] 854 |                     self.conn.flush();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 854 |                     let _ = self.conn.flush();
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/rustile.rs:873:21
[INFO] [stdout]     |
[INFO] [stdout] 873 |                     self.conn.flush();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 873 |                     let _ = self.conn.flush();
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 44.09s
[INFO] running `Command { std: "docker" "inspect" "0acf4f6aa88b8db9ba0a15c322abe2bdb4e5a0636a2998ac37162bf08e083b76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0acf4f6aa88b8db9ba0a15c322abe2bdb4e5a0636a2998ac37162bf08e083b76", kill_on_drop: false }`
[INFO] [stdout] 0acf4f6aa88b8db9ba0a15c322abe2bdb4e5a0636a2998ac37162bf08e083b76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c0494be306cbf9b294fbb8c894900d445b8c2f1a9743ba5abd3db651fac6794
[INFO] running `Command { std: "docker" "start" "-a" "7c0494be306cbf9b294fbb8c894900d445b8c2f1a9743ba5abd3db651fac6794", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `std::any::Any`
[INFO] [stdout]  --> src/core.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::any::Any;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `aogonek` and `x`
[INFO] [stdout]   --> src/rustile.rs:11:20
[INFO] [stdout]    |
[INFO] [stdout] 11 | use xkeysym::key::{aogonek, x};
[INFO] [stdout]    |                    ^^^^^^^  ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `atom_wm_type`, `atom_wm_type_dialog`, `atom_wm_type_utility`, and `atom_wm_type_splash` are never read
[INFO] [stdout]   --> src/rustile.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Rustile<C: Connection> {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 23 |     atom_wm_type: Atom,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 24 |     atom_wm_type_dialog: Atom,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 25 |     atom_wm_type_utility: Atom,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 26 |     _atom_wm_type_toolbar: Atom,
[INFO] [stdout] 27 |     atom_wm_type_splash: Atom,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `should_float` is never used
[INFO] [stdout]    --> src/rustile.rs:535:8
[INFO] [stdout]     |
[INFO] [stdout]  32 | impl<C: Connection> Rustile<C> {
[INFO] [stdout]     | ------------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 535 |     fn should_float(&self, win: WindowId) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/rustile.rs:854:21
[INFO] [stdout]     |
[INFO] [stdout] 854 |                     self.conn.flush();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 854 |                     let _ = self.conn.flush();
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/rustile.rs:873:21
[INFO] [stdout]     |
[INFO] [stdout] 873 |                     self.conn.flush();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 873 |                     let _ = self.conn.flush();
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rustile v0.0.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::any::Any`
[INFO] [stdout]  --> src/core.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::any::Any;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `aogonek` and `x`
[INFO] [stdout]   --> src/rustile.rs:11:20
[INFO] [stdout]    |
[INFO] [stdout] 11 | use xkeysym::key::{aogonek, x};
[INFO] [stdout]    |                    ^^^^^^^  ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `keymaps`
[INFO] [stdout]    --> examples/keymaps.rs:167:2
[INFO] [stdout]     |
[INFO] [stdout] 167 | }
[INFO] [stdout]     |  ^ consider adding a `main` function to `examples/keymaps.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `wm`
[INFO] [stdout]    --> examples/keymaps.rs:165:23
[INFO] [stdout]     |
[INFO] [stdout] 165 | fn act<C: Connection>(wm: &mut Rustile<C>){
[INFO] [stdout]     |                       ^^ help: if this is intentional, prefix it with an underscore: `_wm`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `wm`
[INFO] [stdout]    --> examples/keymaps.rs:165:23
[INFO] [stdout]     |
[INFO] [stdout] 165 | fn act<C: Connection>(wm: &mut Rustile<C>){
[INFO] [stdout]     |                       ^^ help: if this is intentional, prefix it with an underscore: `_wm`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustile` (example "keymaps") due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: fields `atom_wm_type`, `atom_wm_type_dialog`, `atom_wm_type_utility`, and `atom_wm_type_splash` are never read
[INFO] [stdout]   --> src/rustile.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Rustile<C: Connection> {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 23 |     atom_wm_type: Atom,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 24 |     atom_wm_type_dialog: Atom,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 25 |     atom_wm_type_utility: Atom,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 26 |     _atom_wm_type_toolbar: Atom,
[INFO] [stdout] 27 |     atom_wm_type_splash: Atom,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `should_float` is never used
[INFO] [stdout]    --> src/rustile.rs:535:8
[INFO] [stdout]     |
[INFO] [stdout]  32 | impl<C: Connection> Rustile<C> {
[INFO] [stdout]     | ------------------------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 535 |     fn should_float(&self, win: WindowId) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/rustile.rs:854:21
[INFO] [stdout]     |
[INFO] [stdout] 854 |                     self.conn.flush();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 854 |                     let _ = self.conn.flush();
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/rustile.rs:873:21
[INFO] [stdout]     |
[INFO] [stdout] 873 |                     self.conn.flush();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 873 |                     let _ = self.conn.flush();
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7c0494be306cbf9b294fbb8c894900d445b8c2f1a9743ba5abd3db651fac6794", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c0494be306cbf9b294fbb8c894900d445b8c2f1a9743ba5abd3db651fac6794", kill_on_drop: false }`
[INFO] [stdout] 7c0494be306cbf9b294fbb8c894900d445b8c2f1a9743ba5abd3db651fac6794
